Why is reproductive isolation required for speciation to occur?if populations can interbreed, they are considered one species.if populations can interbreed, they do not exchange genetic information.reproductive isolation is not required for speciation because most different species can interbreed.reproductive isolation is not required for speciation because species are not defined by reproduction
In three (3) sentences, explain the function of a vacuole in plant cells? im stuck bio isn't my subject :(
Which type of environmental scientist is likely to study the interactions of gorillas? a. Hydrologistb. Toxicologist c. Environmental Veterinarian d. Ecologist
Which is a similarity between alcohol fermentation and aerobic respiration? Both require oxygen. Both require light energy. Both start with glycolysis. Both produce alcohol.
Total global precipitation is __________ total global evaporation. A)greater then B)less then C)equal to
What is one result of meiosis? A. a larger organism B. identical daughter cells C. repair of damaged cells D. formation of gametes
Which of the following examples best illustrates sensory interaction? A. Julie loves chicken noodle soup, but her cold is making it taste bland. B. Michael was surprised to find that he likes the taste of rare steak. C. Alyssa loves the smell and taste of her mother’s homemade apple pie. D. Eli thought the fish smelled great but tasted awful.
Which of the following scenarios is representative of parasitism? a. Tapeworms living in a mammal’s intestinal tract b. Remora fish attaching themselves to sharks c. Birds feeding on insects stirred up by grazing animals d. Birds eating scraps of food from a crocodile’s teeth
In Figure 33–6, what structure is labeled A? What is the role of the delicate network of capillaries that surrounds them?
Which of these proteins in mammals show only primary and secondary structures? A.)oxytocin. B.)keratin. C.)hemoglobin
The populations of the great apes in Africa are recovering and on the rise. Please select the best answer from the choices provided a. True b. False
Which structure in this plant cell represents the site of ATP production from photosynthesis? mc012-1.jpg A B C D Download png
How does an early onset of spring through climate change affect plants? a. their growing and flowering season starts earlier and is longer b. their growing and flowering season starts later and is longer c. their growing and flowering season starts earlier and is shorter d. their growing and flowering season starts later and is shorter
Populations of host organisms are most likely parasitized when _____. A. they are overcrowded B. they cannot escape C. they are diseased D. they have little to eat
In algae and plants, photosynthesis happens in the A. vacuoles B. mitochondria C. chloroplasts D. chromosomes.
Select all that apply. Which of the following are methods of molecular biotechnology? 0selective breeding 0recombinant DNA 0hybridization 0cloning 0induced mutations 0DNA profiling
How does a catalyst influence a chemical reaction? A.)It speeds up or slows down a chemical reaction by direct participation. B.)It reacts with products to increase the concentration of reactants. C.)It provides an alternative energy pathway for the reaction to proceed. D.)It increases the total amount of products formed.
Peak bone mass typically occurs when a person is in his or her a. teens b. twenties c. thirties d. fifties
What happens when you increase a muscle’s endurance? A)The length and flexibility of the muscle is increased. B)The overall strength of the muscle is increased. C)The thickness and size of the muscle is increased. D)The length of time the muscle can contract without tiring is increased.
Which factor explains why coal dust is explosive? temperature surface area concentration addition of catalyst
Electrons are transferred in the formation of ______________ bonds. A) ionic B) covalent C) metallic D) all chemical
Which discovery could provide evidence against the theory of evolution? A. primate and trilobite fossil in the same rock layer B. human gene in birds, fish, insects and plants C. a living whale with a basic hip bone structure D. bat fossil with a different limb structure than modern bats
Developing a (n)______ made absorption of nutrients more efficient for roundworms. Coelom,anus,or mouth
Why are cane toads in Australia considered an invasive species rather than simply nonnative? A.) They are destructive to native species and have no natural predators. B.) They reproduce more quickly than native species. C.) They have venom glands. D.) Large adult specimens are able to hunt snakes.
Toxins from seafood mushrooms and mold present the greatest potential for what kind of contamination
Bioflix activity: meiosis -- comparing mitosis and meiosis can you identify the similarities and differences between mitosis and meiosis? to review mitosis, watch this bioflix animation: mitosis. to review meiosis, watch this bioflix animation: meiosis. part a - two types of cell division drag the labels onto the grid to indicate the phases of mitosis and meiosis. use only pink labels for pink targets.